<template>
  <div class="login_container">
    <div class="login_box">
      <!--头像-->
      <div class="avatar_box">
        <img src="@/assets/img/logo.png" alt="">
      </div>
      <!--登录-->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="login_form">
        <!--用户-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user" placeholder="请输入用户名称"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" show-password
                    placeholder="请输入用户密码"  @keyup.enter.native="login"></el-input>
        </el-form-item>
        <!--按钮-->
        <el-form-item class="login-subs">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Login",
    data() {
      return {
        // 这是登录表单的数据绑定对象
        loginForm: {
          username: '',
          password: ''
        },
        loginFormRules: {
          // 验证用户名称是否合法
          username: [
            {required: true, message: '请输入用户名称', trigger: 'blur'},
            {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
          ],
          // 验证用户密码是否合法
          password: [
            {required: true, message: '请输入用户密码', trigger: 'blur'},
            {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
          ]
        }
      }
    },
    methods: {
      // 点击重置登录表单数据
      resetLoginForm() {
        this.$refs.loginFormRef.resetFields();
      },
      login() {
        this.$refs.loginFormRef.validate(valid => {
          if (!valid) return
          this.$http.post('login', this.loginForm).then(res => {
            if (res.data.meta.status !== 200) return this.$message.error('用户名或密码错误');
            this.$message.success('登陆成功');
            sessionStorage.setItem('token', res.data.data.token);
            this.$router.push('/home');
          })
        })
      }
    }
  }
</script>

<style lang="less" scoped>
  .login_container {
    background-color: #2b4b6b;
    height: 100%;
  }

  .login_box {
    width: 450px;
    height: 300px;
    background-color: #ffffff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }

  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #ffffff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }

  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .login-subs {
    display: flex;
    justify-content: flex-end;
  }

</style>
